A checklist of lichens of Assam, India (original) (raw)
Related papers
Occurrence of 26 new additional records to the lichen biota of Assam
Asian Journal of Conservation Biology, 2021
The present study deals with 26 new records of lichens to Assam belonging to 14 genera, 9 families and one under Arthoniales from Ultapani Forest Range under Haltugaon Forest division of Kokrajhar district. The crustose lichen showed their dominance in the area with the percentage of 89% and foliose 11%. The members of Diploschistaceae family showed their dominance with three genera and 8 species followed by Graphidaceae with 6 species and Collemataceae, Pyrenulaceae and Thelotremataceae with two species each. The genera Hemithecium exhibited luxuriant growth with five species followed by Ocellularia with four species and Rhabdodiscus with three species. The present study reflects the richness of lichens in the study area. The dominance of Diploschistaceae and Graphidaceae member establishes the existence of semi-evergreen forest in the region and the presence of Ocellularia indicates healthy forest with ecological continuity.
Additions to the lichen biota of Assam State, India
Journal of Threatened Taxa
The present paper deals with 25 new records of lichens under 19 genera and 11 families for the state of Assam in India. The newly reported species from Assam are Alyxoria apomelaena, A. culmigena, A. varia, Caloplaca pseudisteroides, Cryptothecia striata, Diorygma rupicola, Dirinaria papillulifera, Flavoplaca citrina, Graphis sundarbanensis, Herpothallon echinatum, Lecanographa rufa, Letrouitia muralis, Myriotrema clandestinum, Opegrapha discolor, Parmotrema crinitoides, Phaeophyscia hispidula, Porina eminentior, P. interstes, P. mastoidella, Pyrenula submastophora, P. thelomorpha, Rinodina oxydata, Synarthonia bicolor, Zwackhia bonplandii, and Z. viridis. Brief descriptions of these additional lichen taxa from Assam are provided to facilitate their identification.
New Distributional Records to Lichen Biota of Assam, India
Indian Forester, 2021
In a recent survey of lichen from five districts of Assam a total of 138 species belonging to 34 genera and 16 families were collected. Out of the total 37 species are being collected for the first time from Assam state. A large portion of these new reports belong to family Graphidaceae (15 species). In the whole study crustose lichens were dominant (123 spp.) with maximum representation of graphidaceous (59 spp.). Frequent encountering of previously unrecorded species from Assam indicates the lichen richness and insufficient exploration in the state.
New additions to the lichen biota of Assam from Dhubri district, northeastern India
Journal of Threatened Taxa, 2022
The present study deals with the exploration of lichen diversity in Dhubri district of Assam state. A total of 42 lichen species belonging to 10 families and 16 genera were recorded, the majority of which were crustose (93%) with Graphidaceae as the dominant family. Eleven of the lichen species under eight genera are new additions to the lichen biota of Assam.
Diversity and Distribution of Lichens in India vis a vis its Lichenogeographic Regions
National Academy of Biological Science, 2014
Undoubtedly, India is one of the lichen diversity hotspots, where country as a whole with diverse climate, vegetation and topography provide numerous habitats for luxuriant growth of lichens. The compilation of all the lichens reported so far from the country resulted in 2428 lichen taxa which belong to 2368 species, 305 genus and 67 species. With the present data whole country could be divided into eight lichenogeographic regions where Eastern Himalaya and North-east India, and Western Ghats possessed maximum diversity of lichens with 1144 and 1138 species respectively. However, Western Ghats harbors maximum number of 266 endemic taxa in comparison to Eastern Himalayan region (187 taxa). Andaman and Nicobar Islands though lesser number of species the percentage of endemic taxa is too high up to 27%. The country also has as many as 76 rare taxa which are not being collected since many years and can be included under Redlist category. Graphidaceae with 431 species 35 genus is the most dominant family in the country, and in tu3rn Graphis is the most dominant genus with 115 taxa. The maximum numbers of lichen in India belong to crustose group (1509 taxa) and found inhabiting bark. The current study apart from revealing the diversity of lichens in India and its lichenogeogrpahic regions it also ex-
Diversity of lichen flora of Odisha, India- A review
Studies in Fungi, 2016
Based on the compilation of literature on lichens of Odisha (India) and other specimens and preserved in herbaria, we estimate that 252 species of lichens, belonging to 81 genera and 35 families are known from the state. Graphidaceae with 49 species is the dominant family, followed by Arthoniaceae (21), Pyrenulaceae (19), Parmeliaceae (18), Trypetheliaceae (17), Physciaceae (15), Teloschistaceae (14), Lecanoraceae (13), Pertusariaceae (12), Ramalinaceae (11), Caliciaceae (11), Thelotremataceae (9) and Lecidiaceae (4). Among the lichen genera Graphis is dominant with 27 species, followed by Pyrenula (16), Caloplaca (14), Pertusaria (12), Lecanora (10), Parmotrema (9), Cryptothecia (9) and Pyxine (6). Accounts of lichens are only available from 13 out of 30 districts. Of these only cursory collections from 10 districts are available, whereas Mayurbhanj, Jharsuguda and Ganjam districts are well-explored for their lichen flora. The present enumeration of more than 250 species clearly indicates a rich diversity of lichens for the state. Further exploration in other unexplored districts will add more species to the lichen flora of the state.
The present work describes lichen diversity in Kodagu district, which is also known as micro hotspot situated in the Western Ghats of Karnataka, India. A total of 87 species belonging to 29 families under 50 genera was enumerated during the study. About 25 species of lichens are found to be new record to the lichen flora of Karnataka. Family Parmeliaceae and Physciaceae were dominated with 20 species under 5 genera and 15 species under 7 genera, respectively. Compared to other substratum most of the lichens recorded were corticolous (colonizing bark) with 78 species. Crustose and foliose growth form dominates with about 44% in all the regions. The highest diversity of lichens was enumerated in Nisargadhama [MDF] with 57 species, with highest Shannon-Simpson index of 3.75 and 0.02 respectively in which macrolichens were more dominated. Distribution of lichens in deciduous forest was more when compared to semi-evergreen and evergreen forests. The lichen rich diversity in a small, densely forested area indicates that much exploration regarding the enumeration of lichens is required.
An Assessment of Lichens Diversity from Mandi District, Himachal Pradesh, India
2020
A total of 70 species of lichens belonging to 29 genera and 15 families were found growing in eight different localities of Mandi district of Himachal Pradesh, India. The present study reveals the addition of 14 species of lichens as new to the state. The lichen genus Lecanora with 11 species exhibits the dominance in the area. Among the different localities of the district the area Sikandra Dhar showed maximum diversity of lichens followed by Balh valley, Barot and Mandi city as 19, 18, 17 and 16 species, respectively. The tropical zone exhibits luxuriant growth of trees like Pinus, Shorea robusta, Prunus, Celtis, Grewia and Rubina. The Rubina and Populus trees cultivated along road side bear luxuriant growth of Candelaria concolor together with Physcia dilatata, a foliose lichen. The temperate region of the district exhibits luxuriant growth of Quercus leucotricophora trees which support the luxuriant growth of Parmotrema nilgherrense, Ramalina conduplicans, Ramalina sinensis, Het...
New addition to lichen flora of Uttar Pradesh, India
2016
The lichen taxa collected from Uttar Pradesh are documented in different checklist, floristic, monographic and revisionary studies (Awasthi, 1980, 1988, 1991, 2000, 2007, Srivastava, 2004, Dubey et al. 2007, Singh & Sinha 2010, Karakoti et al. 2014, Gupta et al. 2015). Recently Nayaka & Upreti (2013) analyzed the status of lichen diversity in Uttar Pradesh which revealed the occurrence of 135 species belonging to 46 genera and 25 families. This state represented three distinct phytogeographical regions. The transitional belt running along the entire length of the state of Uttarakhand and country of Nepal is called the “Terai‟ and „Bhabhar‟ area and have thick forest cover, swamps and marshes. The Gangetic plain elongates the area from east to west is the most fertile as well as agricultural land. The southern fringe of the Gangetic Plains is demarcated by the Vindhya Hills and Plateau exhibit strong ground and low hills. Most of the central region of the state of Uttar Pradesh is mo...